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题名:
A new phase unwrapping algorithm using two digital phase-shifting gratings of different period for fringe projective 3D profile sensor - art. no. 662324
作者: Luo, J ; Wang, Y ; Xiong, A ; et al.
出版日期: 2008
会议名称: PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE)
中文摘要: Fringe projective 31) profile sensor can obtain dense coordinates map of object outline fast and quantitatively. Phase unwrapping technique plays an important role in the performance of the sensor when phase-shifting fringe patterns are used. The multi-period phase shift method can considerably increase the accuracy of measuring phase value. However, due to error of intensity approximation arisen from digital grating and the spatial resolution limits on the projector and cameras of the senor, the result of unwrapped phase value is still within noise only by means of temporal phase-unwrapping. A new algorithm combining the spatial and temporal phase-unwrapping methods is presented. The algorithm, which is a good compromise between the number of needed gratings and the unwrapping reliability, is especially designed for using two groups of digital phase-shifting gratings with different period. Experiments have been carried out by selecting about thirty pairs of periods to illustrate the efficiency of temporal and spatial criterions, and the results offer the tolerance of phase calculation which is unwrapped correctly. The algorithm has been implemented on a test system, and the ratio of unwrapping successfully reaches to 80% with the repeated error 0.05 rad.
收录类别: Ei
语种: 英语
卷号: 6623
ISSN号: 0361-0766
文章类型: 会议论文
页码: 62324-62324
内容类型: 会议论文
URI标识: http://ir.ioe.ac.cn/handle/181551/1810
Appears in Collections:光电探测技术研究室(三室)_会议论文

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Recommended Citation:
Luo, J,Wang, Y,Xiong, A,et al. A new phase unwrapping algorithm using two digital phase-shifting gratings of different period for fringe projective 3D profile sensor - art. no. 662324[C]. 见:PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE).
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